People assume that even at networking, social gatherings, or speed dating events. Doesn't matter what their initial impression is as you can change their later impression.
> ...oh god, this is boring...
That can be said for anything. The point is to make them contribute and prevent a one-sided conversation.
> ...this is wildly veering _super_ boring and way too personal.
That's why progression matters. You can also refrain from asking them directly, like for example: "let me guess, you're an arts student/interior designer" Most people would correct your assumption, and now you're talking about occupation. Or you can segway that to recreation "I could've sworn that you're the (assumed occupation) type. You seem like you do plenty of (activity related to assumed occupation)" The person would again correct the assumption, or if not, you can change the subject or push through. Either ask directly "so what do you do instead?" or share a detail about yourself/the subject that'd bait the person into asking or sharing theirs.
> ...Axe murder...
Most people respond friendly. If they are part of the contrary, move on.